Director Configuration Transitions of Polyelectrolyte Coated Liquid-Crystal Droplets

被引：42

作者：

Zou, Jianhua ^{[1
]}

Bera, Tanmay ^{[1
]}

Davis, Alicia A. ^{[1
]}

Liang, Wenlang ^{[1
]}

Fang, Jiyu ^{[1
]}

机构：

[1] Univ Cent Florida, Adv Mat Proc & Anal Ctr, Dept Mech Mat & Aerosp Engn, Orlando, FL 32816 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2011年 / 115卷 / 29期

基金：

美国国家科学基金会;

关键词：

SELF-ASSEMBLED MONOLAYERS; MULTILAYERS; EMULSIONS; INTERFACES; STABILITY; PHASES; GROWTH; FILMS;

D O I：

10.1021/jp201909m

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Liquid-crystal droplets are of great interest because of their large surface areas, rich phases, and tunable optical properties. The director configuration of liquid-crystal droplets provides a unique optical sign to detect the events occurring at the droplet surface. In this article, we report the alternating bipolar/radial configuration transitions of 4-n-pentyl-4'-cyanobiphenyl (SCB) droplets triggered by the layer-by-layer coating of negatively charged poly(styrenesulfonate sodium (PSS) and positively charged poly(diallyldimethylammonium chloride) (PDADMAC) on the droplet surface. The alternating configuration transitions are due to the interactions of the SCB with polar versus nonpolar PDADMAC/PSS multilayer coatings. Furthermore, we find that the coating of PDADMAC/PSS multilayers makes the director configuration of the SCB in the droplets sensitive to environmental salt concentrations.

引用

页码：8970 / 8974

页数：5

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